CN1217249A

CN1217249A - Metal wire for welding

Info

Publication number: CN1217249A
Application number: CN98122470A
Authority: CN
Inventors: 清水弘之; 西田美佳; 增田薰; 伊藤和彦; 宫崎邦彰; 政家规生
Original assignee: Kobe Steel Ltd
Current assignee: Kobe Steel Ltd
Priority date: 1997-11-11
Filing date: 1998-11-11
Publication date: 1999-05-26
Anticipated expiration: 2018-11-11
Also published as: KR100330793B1; DE69816756D1; CN1178762C; TW418148B; KR19990045200A; AU710977B2; DE69816756T3; EP0916444B1; AU9143898A; EP0916444A1; US20020037420A1; DE69816756T2; US6841246B2; US6337144B1; EP0916444B2

Abstract

A welding wire of the type consists of a plated or uncovered solid wire and a flux-cored wire for carbon steel or stainless steel, wherein one or more of hydrocarbon compounds selected from the group consisting of saturated or unsaturated hydrocarbon compounds, which have from 5 to 12 carbon atoms and a linear or branched structure, and hydrocarbon compounds having a cyclic structure are deposited on a wire surface. A lubricating oil and/or lubricating particles are chemically combined with a wire surface through the one or more hydrocarbon compounds. The total amount of the hydrocarbon compounds, and a lubricating oil and/or lubricating particles deposited on the wire surface is in the range of 0.1 to 5 g per 10 kg of the wire.

Description

Metal wire for welding

The present invention relates to a kind of be suitable for carbon steel or stainless automatically or the welding wire that uses in the semi-automatic welding, especially relate to a kind of welding wire that can improve the feed of welding wire.The present invention is applicable to the wire and the intectate wire of coating or the wire in cavity is arranged.

When welding wire is used for automatic or semi-automatic welding, wire need be transported to the arc welding position from curled hair tube or supply part.This welding wire transmits through the inside arrival arc welding part of cushions as the pipe cable.When welding wire during easily by cushions, just is defined as the feed of welding wire in passage, shows the welding wire of feed can be by the pipe cable of growing by applying little feed power thereon.Wherein as in the shipyard, use long pipe cable in the welding place continually, the most important thing is that the feed of welding wire will be got well.

Be in welding place under the harsh conditions in the feeding system of welding wire, for a long time welding can cause surface or film dust deposit on feed roller and the spring lining inside, thereby cause that feed wiry lost efficacy.But in order to improve the feed performance of welding wire.The common practice is all kinds lubricant that has good sliding capability to surface applied wiry.In order to improve sliding capability, once a kind of wire that proposition is used to weld, as by to welding wire surface coating lubricating oil such as vegetable oil (as palm oil) and animal oil (as lard) with as the particle of the greasing substance of graphite and molybdenum bisuphide, can improve feed wiry (spy opens flat 6-285678).When lubricated and lubricated granules imposed on wire surface in right amount when these, the coefficient of friction between the inner wall section in welding wire surface and the Spring liner can reduce.And therefore, they show good lubricating property.Therefore improved feed wiry.

In addition, comprise in other known method that a kind of method (spy opens flat 1-166898) wherein has a large amount of carbon atoms and has linearity or the higher fatty acids such as the stearic acid of a type structure, oleic acid, linoleic acid or linolenic sodium salt or sylvite are deposited on surface wiry, carry out last wire drawing subsequently and further use lubricating oil to improve feed wiry on the wire that obtains.Another kind method (spy opens flat 2-284792) is included in a kind of oil lubricant that contains the sodium salt or the sylvite of some carboxylic acid of wire surface deposition, thereby improves feed wiry.In two kinds of methods, improved feed wiry by lubricating oil at the alkali metal salt of an amount of higher fatty acids of metal wire surface deposition.

Yet these prior arts have following shortcoming.At first, in that being arranged under the situation of welding wire, (spy opens flat 6-285678) wherein to the welding wire surface, improved feed wiry by the greasing substance of using lubricating oil and making by molybdenum bisuphide and graphite, when the long welding operation of welding wire process, greasing substance is deposited on the inner surface in the Spring liner, thereby has caused that lining is by all plugs.Hindered smooth supply wiry troublesomely.This be since greasing substance can not with the combination of metal wire surface, greasing substance is from the segregative reason of wire surface.

On the other hand, in the method in (spy opens flat 1-166898), wherein will be deposited on the metal surface than the sodium or the sylvite of high fatty acid, carry out wire drawing subsequently and use lubricating oil, and (spy opens flat 2-284792) wherein contains the sodium salt of carboxylic acid or the oil lubricant of sylvite is deposited on surface wiry in other method, when the long period is carried out in welding, the alkali metal salt of higher fatty acids separates and is deposited on the inside of cushions with lubricating oil from wire surface as first kind of situation, thereby has caused in the Spring liner and block.Therefore, feed decline wiry.This is because the chain length of the hydrocarbon part in the carboxylate is oversize, so the adhesion of wire surface and lubricating oil is relatively poor.This makes greasing substance separate from wire surface easily, thereby causes in cushions generation deposition.In addition, the slaine of higher fatty acids comprises that odium stearate is used as a kind of good lubricating oil that wire drawing is used, and this slaine with higher fatty acid salt of HMW can form firm thick film on surface wiry.Therefore,, fear that wire slides on donor rollers, lost efficacy thereby produce feed although improved sliding capability wiry.Particularly, wire is a coating, and slip can make the film of coating come off.

The object of the present invention is to provide a kind of bonding wire, it has overcome the shortcoming of the similar welding wire of prior art, a kind of lubricating oil that chemically combines with it is arranged on the surface of this welding wire, when being used for welding for a long time with convenient welding wire, greasing substance can and can not produce owing to any trouble of using wire to produce from the wire separation.As the obstruction in its Spring liner of inside.

Another object of the present invention is to provide a kind of welding wire with improved wire feed, and guarantees stable, the feed smoothly of welding wire.

According to the present invention, provide a kind of be applicable to the welding of carbon steel or stainless steel by such welding wire spraying plating or that intectate solid metallic silk or scaling powder core wire are formed.That chooses in the group that the hydrocarbon compound that wherein at least a hydrocarbon compound has a kind of circulus by saturated and undersaturated hydrocarbon compound neutralization that have 5 to 12 carbon atoms and an a kind of linearity or chain structure is formed is a kind of, and at least a hydrocarbon compound existence or be deposited on the wire surface.

Saturated or unsaturated hydrocarbon compound with a kind of linearity or branched structure above-mentioned is called " chain compound ".

The example of chain compound comprises carboxylic acids or carboxylic metallic salt.Carboxylic acid is by from by defending acid, caproic acid, sad (caprylic acid), sad (octylic acid), Secanoic acid, sad (caprylic acid), capric acid, laurate, that chooses in the group that 5-12 (carbon) olefin(e) acid is formed is a kind of, and the carboxylate metal salt comprises the salt of carboxylic acid above-mentioned, and its metal is chosen from lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium.

Hydrocarbon compound with circulus preferably includes some carboxylic acid and metal carboxylate.Best example with hydrocarbon compound of circulus comprises having as the aphthenic acids of the circulus of five-membered ring or six-membered ring and the slaine of aphthenic acids.

The becket alkyl salt comprises the naphthenate of the metal that one or more are chosen from the group of being made of lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium.

In addition, hydrocarbon compound can be aphthenic acids and the mixture that contains the naphthenate of the metal of choosing from the group that lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium are formed.

In addition, preferably at least a from animal and vegetable oil, the lubricating oil of choosing in mineral oil and the artificial oil is present in surface wiry.In addition, at least one class has greasy property and from by molybdenum bisuphide, tungsten disulfide, and the lubricated granules of choosing in the group that graphitic carbon and polytetrafluoroethylene (PTFE) are formed is present in wire surface.In this case, have this chain structure or the hydrocarbon compound of circulus and the total amount of lubricating oil as above mentioned, or at the chain compound on the wire surface or have the hydrocarbon compound of this circulus of as above mentioning and the total amount of lubricated granules is in per 10 kilograms of (kg) wires are the scope of 0.1 to 5 gram.

Fig. 1 (a) and Fig. 1 (b) be respectively show by the chain compound with 5 to 12 carbon atoms make lubricating oil how on wire surface orientation and lubricated granules how to be fixed to the schematic diagram of wire surface.Wherein Fig. 1 (a) has shown the situation of using no covering metal wire to be used to weld, and Fig. 1 (b) has shown the situation that the wire of use coating is used to weld.

Fig. 2 (a) and Fig. 2 (b) have shown the lubricating oil made by cyclic fatty acid or ring-shaped fat hydrochlorate respectively, and how how directed and lubricated granules is fixed to the schematic diagram of wire surface in wire surface, wherein Fig. 2 (a) shows the situation of using no covering metal wire to be used to weld, and Fig. 2 (b) shows the situation that the metal wire of use coating is used to weld;

Fig. 3 (a) and Fig. 3 (b) have shown that respectively chain hydrocarbon or cyclic hydrocarbon compound separately exist in the state on the wire surface, and 3 (a) have shown the state that uses chain hydrocarbon compound, and Fig. 3 (b) has shown the situation of using cyclic hydrocarbon compound; And

Fig. 4 is the flow chart that has shown the welder that uses in embodiments of the present invention.

In order to reduce between wire surface and the wire in the conduit hawser guiding inner surface, such as the dynamic friction coefficient between wire and cushions or the polytetrafluoroethylene (PTFE) pipe internal surface, lubricating oil (for example, animal or plant oil, mineral oil and artificial oil or their mixture) need to have the fusing point (softening point) and the viscosity that are applicable to service condition wiry, and lubricated granules is (by molybdenum bisuphide, tungsten disulfide, graphitic carbon and polytetrafluoroethylene (PTFE) etc. are made) need to have on the metal wire surface good sliding capability (lubricating oil and lubricated granules all are called lubriation material hereinafter). If these lubriation materials are by each apparent unit are on metal wire surface or can be attached to equably or be deposited on the metal wire surface with suitable amount by the per unit weight of metal wire, then after being right after the welding beginning, the feed of metal wire just improves. Yet if lubriation material is again the physical method coating, that is if lubriation material just invests the metal wire surface by the wettability of lubricating oil, after through long-time welding, lubriation material breaks away from from the metal wire surface easily. This method is stopped up in the conduit hawser easily. This means for by adding to metal wire surface or use lubriation material improving the feed of metal wire, but hindered on the contrary feed performance. In order to stop lubriation material to separate from the metal wire surface and to be deposited in the umbilical, need to metal wire surface and lubricating oil be combined with chemical method.

We have conducted extensive research to solve the difficult problem in the prior art, found that, when the chain compound with 5 to 12 carbon atoms or hydrocarbon compound with circulus are present on the metal wire surface and are present between metal wire surface and lubricating oil and/or the lubricated granules, can improve the feed of metal wire, thereby eliminate the obstruction of umbilical. Chain compound with 5 to 12 carbon atoms has the possibility that specific direction is orientated on the metal surface with the hydrocarbon compound with circulus.

The chain compound with 5 to 12 carbon atoms by some carboxylic acids (below be called lower aliphatic acids or acids) and some carboxylate (hereinafter referred to as low fatty acid salt or salt) form can pass through its chemical bond with metal wire surface and lubricating oil. By all kinds of materials being put on the metal wire surface and the metal wire feed has been carried out broad research, so that finds to have 5 carbon atoms defends acid and its slaine, and have laurate and its slaine of 12 carbon atoms and have the linderic acid of 12 carbon atoms and its slaine can be used as a kind of paste or adhesive in order to lubricating oil is fixed to the metal wire surface. Because these lower fatty acids and lower aliphatic hydrochlorate can be fixed to lubricating oil the metal wire surface, and the lubricated glossy wet lubricated granules of energy (as: molybdenum bisuphide, tungsten disulfide, graphitic carbon, polytetrafluoroethylene (PTFE)) is present in wire surface and have sliding capability, also can be fixed in the metal wire surface.

Carrying out chemically combined mechanism by this lower fatty acid or its salt is following consideration. Aliphatic acid or its salt have the characteristic that allows in a specific direction orientation of metal surface, usually can combine by the metal surperficial with it at the carboxyl with polarity, and a hydrocarbon chain or a part of hydrocarbon chain become the direction perpendicular to the metal surface. When the hydrocarbon chain that is connected with carboxyl in short-term, such as lower aliphatic acids or their salt, become significantly along the trend perpendicular to the orientation of metal surface direction, the metal surface uniform fold under it has the weak point one size molecule of lower fatty acid or its salt.

Equally, the hydrocarbon compound with circulus by carboxylic acid (below be called cycloaliphatic acids) or its slaine (below be called the cycloaliphatic hydrochlorate) form plays wire surface and the chemically combined effect of lubricating oil. Because the hydroxyl compounds with circulus more or less, has sliding capability, they work to improve the wire feed in the part of lubricating oil in shortage. Result to the broad research of various types of materials of being applied to wire surface, discovery is at the aphthenic acids with circulus and its slaine low price of the industrial drier that is widely used as lacquer and have sliding capability, and plays lubricating oil is fixed to adhesive effect on the wire surface. Because these cycloaliphatic acids or cycloaliphatic hydrochlorate are so that lubricating oil can be fixed on the metal surface, they with and the lubricated granules that be present in metal surface moistening with lubricating oil (for example: molybdenum bisuphide have, tungsten disulfide, graphitic carbon and polytetrafluoroethylene (PTFE)) be fixed to the lip-deep effect of metal wire.

Consider that the chemical bond mechanism of this cycloaliphatic acids or their salt carries out as follows. A certain specific direction has orientation in the metal surface for cycloaliphatic class or their salt. Usually, carboxyl and metal surface with polarity combine, and hydrocarbon chain turns to a direction heavily straight with the metal surface. In addition, hydrocarbon chain is the form of ring, and the plane of a loop of circulus has the very strong trend that is parallel to the metal surface orientation. Therefore, hydroxy acid (cycloaliphatic acids) class or their slaine (cycloaliphatic hydrochlorate) with circulus are compared with the linear carboxylic acid that only is orientated in the metal surface or the situation of linear carboxylate, can demonstrate stronger bonding force. Therefore, the metal surface is coated with the molecule of cycloaliphatic acids or its salt very firmly, equably. Hydrocarbon chain itself with such circulus can show sliding capability.

Fig. 1 (a) and Fig. 1 (b) are respectively a schematic diagram, illustrate that the chain compound with 5 to 12 carbon atoms is fixed to lubricating oil and lubricated particle the mechanism on metal welding wire surface. Fig. 1 (a) illustrates the situation of using intectate wire to be used for welding, and Fig. 1 (b) illustrates that use is electroplated or metallized wire is used for the situation of welding. Shown in Fig. 1 (a), the molecule of each chain compound 2a is along the direction vertical with intectate welding wire surface orientation, and each hydrocarbon chain 3a also be from the end of chain compound 2a on the vertical direction of wire surface outside orientation. The even topped molecule that lubricating oil 4a is arranged on hydrocarbon chain 3a. By this method, hydrocarbon chain 3a and lubricating oil 4a are just with the chemical mode combination, and lubricated granules 5a is molybdenum bisuphide for example, just enter between hydrocarbon chain 3a and the lubricating oil 4a and therefore to be stablized.

In the Fig. 1 wiry (b) that uses metallisation or plating among Fig. 1 (a), be that the molecule of chain compound 2b is along the surface orientation of metal surface 15 outside different. Especially, along carrying out chemical bond perpendicular to the hydrocarbon chain 3b of the chain compound 2b of plated metal welding wire surface direction orientation and the molecule of lubricating oil 4b, during entered lubricated granules 5b and stabilisation.

Fig. 2 (a) and Fig. 2 (b) show the mechanism that lubricating oil and lubricated granules is fixed to wire surface by cyclic hydrocarbon compound. Fig. 2 (a) has shown a kind of situation of using the intectate welding wire, and Fig. 2 (b) has shown the situation of using the welding wire of electroplating. As shown in Fig. 2 (a), the cyclic hydrocarbon block part 3c of cyclic hydrocarbon compound is orientated at the surperficial 1c of intectate welding wire, and its mode is that part ring-type circulus is parallel with wire surface. A kind of carboxyl of linear alkyl chain extends out from each ring hydroxyl block part 3c and outwards is orientated along the direction vertical with wire surface 1c. As can be seen, the molecule of lubricating oil 4c covers the molecule of cyclic hydrocarbon 3c equably. Cyclic hydrocarbon block part 3c and lubricating oil 4c carry out chemical bond, and lubricated granules 5c such as molybdenum bisuphide enter between cyclic hydrocarbon 3c and the lubricating oil 4c and stabilisation.

Equally, when using electroplating metal wire, cyclic hydrocarbon 3d is orientated in the mode that the part circulus is parallel to wire surface on the surface of metal level as shown in Figure 2.Situation as mentioned above, cyclic hydrocarbon 3d and lubricating oil 4d enter lubricated granules 5d and stabilisation therebetween in chemically combination.

Fig. 3 (a) and 3 (b) show the schematic diagram that is present on the wire surface respectively when the chain hydrocarbon compound with 5 to 12 carbon atoms and cyclic hydrocarbon compound use separately.It should be noted that Fig. 3 (a) has shown the situation of using chain hydrocarbon compound, and Fig. 3 (b) has shown the situation of using cyclic hydrocarbon compound.If chain or cyclic hydrocarbon compound separately exist on the wire surface shown in Fig. 3 (a) and 3 (b), can expect to have the slippage of light degree.Presumably, this is because the linear alkyl chain of chain hydrocarbon 3e or cyclic hydrocarbon 3f shows due to the sliding capability.

State that as top the hydrocarbon chain of lower fatty acid or low fat hydrochlorate or the linear alkyl chain block of cyclic hydrocarbon and this cyclic hydrocarbon partly are oil loving, therefore lubricating oil is had good compatibility.In fact, lower fatty acid or its salt, or one deck homogeneous film of cycloaliphatic acids or its salt begins to be formed on the wire surface, covers one deck lubricating oil thereon.And lubricated granules such as molybdenum bisuphide enter in the film of lubricating oil and stabilisation.In this way, by lower fatty acid or its salt, or the molecule of cycloaliphatic or its salt, lubriation material of being made by lubricating oil and/or lubricated granules and wire surface are just with chemical bonded refractory altogether.Therefore, the dynamic friction coefficient between the inwall in wire surface and the Spring liner can reduce, thereby has stoped the wire surface of lubriation material to be separated.

Why having described by the carbon atom number in the chain compound that imposes on wire surface of the present invention is the reason of determining by the front explanation.

The carbon atom of chain compound: 5 to 12

For example use stearic acid or its slaine to carry out extensive studies for chain compound (higher fatty acids class and their salt), but do not obtain any obvious effects with 13 or more a plurality of carbon atoms.Consider that this is owing to the needed reason that will grow of carbochainization.Therefore the chain compound that has 13 or more a plurality of carbon atoms is unlikely in the wire surface orientation.When stearic slaine was coated wire surface, wire slided at the wire feed rolls place.This reason is considered as follows: in fact apparent, lubricant when employing has the slaine of aliphatic acid of this macromolecule such as hard soap as wire drawing, the metal salinity of using the aliphatic acid with macromolecule on welding wire surface forms the firm thick film of one deck thereon.In automatic welding or semiautomatic welding termination process, the film of the slaine of these higher fatty acids can cause slip wiry at the feed roller place usually.On the other hand, for having 4 or the chain compound of carbon atom still less, test as butyrate and acetate.As a result, when finding the decreased number when carbon atom, carbochain has died down as the function of lipophilic group, can not expect that these salt are used as a kind of paste or adhesive effectively with fixing lubricating oil.Useful like this, in the present invention chain compound should be defined as having 5 to 12 carbon atoms.Therefore, can obtain a kind of desirable film, it has lubricity when standing to rub under low relatively pressure in cushions inside, and when standing to rub under donor rollers applies elevated pressures, lubricating film can rupture.

As mentioned above, low fat acids or their salt are very effective as a kind of paste that lubriation material is fixed to wire surface.Even also can not cause the obstruction of cushions inside through long welding, improved feed wiry, therefore can under the stable material-supplying of metal welding wire and low feed resistance, weld.

Connect down industry, will describe according to the hydrocarbon compound that imposes on the welding wire surface of the present invention with circulus.

Have the hydrocarbon compound of circulus, it has orientating function, not only comprises those compounds with carbon one carbon single bond, also comprises having benzene ring structure and as those compounds of the unsaturated bond of two keys.Have benzene ring structure or as the example of the hydrocarbon compound of the unsaturated bond of two keys comprise some phthalic acid derivatives, for example molecular formula is C ₆H ₄(C ₂H ₅OOC) ₂Phthalic acid diethyl ester, molecular formula is C ₆H ₄(C ₄H ₉OOC) ₂Phthalic acid diethyl ester and molecular formula be C ₆H ₄(C ₈H ₁₇OOC) ₂O-phthalic acid dibutyl ester.Circulus can be by the atomic building that comprises carbon, oxygen, nitrogen, sulphur or phosphorus, and these atoms have orientating function equally.The hydrocarbon compound that its circulus has this atom of as above mentioning comprises, as, furans, allied compound and its derivative.In addition, if hydrocarbon compound has a circulus, then these compound oriented approach are plane and welding wire surperficial parallel of ring.When ring was made of 3 or more a plurality of carbon atom, can expect had effect of the present invention.

Aphthenic acids is the mixture by the compound of the cycloalkanes distillation thing acquisition of oil.Although these compounds with linear alkyl chain are often to adopt, when using aphthenic acids with circulus such as five-membered ring or six-membered ring or its salt in the operation of the present invention, can expect has remarkable result.If when linear aphthenic acids of Jia Ruing or its salt and annular ring alkanoic acid or its salt used together inevitably, annular ring alkanoic acid or its salt were as a kind of paste, its effect is not adversely affected.

As mentioned above, to having the linear of big figure carbon atom or the higher fatty acids of branch type or its salt, carried out test widely as stearic acid or its slaine, but do not obtained obvious effects.Presumably, this is because this higher fatty acids or its salt have the number of required carbon atom, and therefore unlikelyly is orientated at welding wire surface.On the other hand, although cycloaliphatic acids or their salt have a large amount of carbon atoms, yet their loop configuration wherein the length of carbochain to lack significantly and this is orientated it easily at welding wire surface.

The stearic slaine of using on welding wire surface can cause welding wire in the slippage of supplying with the material roller place.The reason of this phenomenon is considered as follows: the lubricant when employing has the slaine of aliphatic acid of this macromolecule such as metallic stearate as wire drawing clearly, the slaine of using the aliphatic acid with HMW on welding wire surface can form firm thick film thereon.The film of the slaine of this higher fatty acids can cause the slippage of metal welding wire at the feed roller place in the process of welding or semi-automatic welding automatically.

Cycloaliphatic acids or its salt have sliding capability and can improve the feed of welding wire.In addition, they are very effective as the paste that lubriation material is fixed to the metal welding wire surface, thereby have improved the feed performance of metal welding wire.Therefore, it is can make for a long time can not cause that cushions stops up in the welding process, and under low feed resistance the stable supplying welding wire, thereby finish welding.

Because lower fatty acid or their salt, or cycloaliphatic or their salt are to use as a kind of paste or adhesive, preferably after wire drawing, the welding wire surface that obtains is cleaned and uses with lower fatty acid or its salt, perhaps cyclic fatty acid or its salt are used lubricating oil and/or lubricated granules subsequently again to improve feed performance.Yet in the final stage of wire drawing, lower fatty acid or its salt, or cycloaliphatic acids or its salt can be as the lubricants of wire drawing, the welding wire that is produced can carry out the further coating as above mentioned.Not simplification for surface treatment process, can be with low fatty acid or their salt, or cycloaliphatic acids or their salt, lubricating oil and lubricated granules mix and coating simultaneously.Particle as molybdenum bisuphide is used the high pressure lubricant that performs usually.Therefore, finish wire drawing, further be coated with lower fatty acid or its salt subsequently by using molybdenum bisuphide to wait, or the mixture of cycloaliphatic or its salt and lubriation material.

This method of application can be applied on the welding wire surface by the contact rubbing method, for example use as polishing, or welding wire is immersed in the solution of required component and polishing to form uniform coating.In addition, this coating can be the electrostatic interaction of the non-way of contact.If might be with lower fatty acid or its salt, or cycloaliphatic acids or its salt, lubricating oil or lubricated granules uniform dissolution or dispersion, the solution of generation or dispersion can be coated on the metal welding wire simultaneously.If can not obtain uniform solution or dispersion, these components can be coated with respectively.In order to improve by paper level aliphatic acid or its salt, or cycloaliphatic acids or its salt, lubricated and the solution that lubricated granules is made or the stability and the coating operation of dispersion can be added surfactant such as 1.2-ethylene glycol, ester class etc. in coating solution or dispersion.

It should be noted that, when lower fatty acid or its salt, or cycloaliphatic acids or its salt are when being present on the welding wire surface with the amount of per 10 kilograms of welding wires, 0.001 to 2 gram, and when lower fatty acid or its salt, or cycloaliphatic or its salt, and the deposition total amount of lubricating oil and/or lubricated granules can be guaranteed good welding wire feed performance in the scope of per 10 kilograms of welding wires, 0.1 to 5 gram the time.In the time of in this scope, when long-time continuous welding, the amount of substance of the obstruction in the conduit wiring is the amount that can not produce trouble.

Embodiment

The result of the comparison of the characteristic of the welding wire that will make by the present invention and those comparative examples' characteristic is described down.

At first, as shown in following table 1, the metal banded penstock of being represented by M1 and M2 is filled with the solder flux of representing with F1 and F2 respectively that is used for carbon steel of component shown in the table 2, thereby is formed basic welding wire respectively with its component.These welding wires each to carry out wire drawing be 1.2,1.4 and 1.6 millimeters the flux core welding wire that is used for carbon steel to obtain to have gage of wire.Should be noted that, as shown in following table 2, solder flux plays the content effect that increases or reduce iron (Fe) powder weight percentage (wt%), and solder flux is filled in the ferrule, makes the weight (that is solder flux percentage) of solder flux be arranged on 12 and 14 percentage by weights (wt%) by the total weight of welding wire.

Table 1

The symbol of ferrule	The chemical constituent of ferrule (percentage by weight)
	The chemical constituent of ferrule (percentage by weight)					Carbon	Silicon	Manganese	Phosphorus	Sulphur
	????M1 ????M2	????0.08 ????0.01	????0.8 ????0.04	????0.7 ????1.5	?0.009 ?0.013	Carbon	Silicon	Manganese	Phosphorus	Sulphur	????0.005 ????0.005

Table 2

The symbol of solder flux	The chemical constituent (percentage by weight) that is used for the solder flux of carbon steel
						Iron	Manganese	Other metal dust	Oxide	Other compound
	????F1 ????F2	????35 ????55	????10 ????10	????3 ????3	????45 ????30	Iron	Manganese	Other metal dust	Oxide	Other compound	????7 ????2

To have the component shown in the following table 3 respectively by the basic welding wire shown in B1 and the B2, carry out wire drawing is used for carbon steel with the gage of wire that obtains to have 0.8 and 1.6 millimeter solid welding wire respectively.

Table 3

Symbol	The chemical constituent (percentage by weight) that is used for the solid welding wire of carbon steel
									Carbon	Silicon	Manganese	Phosphorus	Sulphur	Chromium	Molybdenum	Titanium
	?M1 ?M2	?0.04 ?0.09	?0.8 ?1.0	????1.2 ????1.2	?0.010 ?0.011	?0.02 ?0.006	????0.03 ????0.6	????- ????0.4	Carbon	Silicon	Manganese	Phosphorus	Sulphur	Chromium	Molybdenum	Titanium	????0.2 ????0.03

To have shown in the table 5 and by the component shown in F3 and the F4 be used for the combination of stainless solder flux and filling advances to have the ferrule M3 and the M4 of the component as shown in following table 4, thereby form basic welding wire.Each welding wire gives wire drawing to obtain to have the stainless flux core welding wire that is used for of 1.2 to 1.6 millimeters of gage of wires.The solder flux filling is advanced in the corresponding metal hoop, make the weight (that is percentage of solder flux) of solder flux be set in 15-25 percentage by weight (wt%) with the total weight of welding wire.

Table 4

The symbol of ferrule	The chemical constituent of ferrule (percentage by weight)
	The chemical constituent of ferrule (percentage by weight)							Carbon	Silicon	Manganese	Phosphorus	Sulphur	Nickel	Chromium
	????M3 ????M4	?0.02 ?0.03	?0.4 ?0.4	?1.2 ?1.3	?0.015 ?0.019	????0.015 ????0.003	????8.1 ????9.5	Carbon	Silicon	Manganese	Phosphorus	Sulphur	Nickel	Chromium	????19.2 ????20.1

Table 5

The symbol of solder flux	The chemical constituent (percentage by weight) that is used for stainless solder flux
							Iron	Nickel	Chromium	Other metal dust	Oxide	Other compound
	????F3 ????F4	????7 ????10	????18 ????15	????40 ????38	????6 ????10	????26 ????23	Iron	Nickel	Chromium	Other metal dust	Oxide	Other compound	????3 ????4

In addition, the basic welding wire B3 to B5 with the component shown in the table 6 makes each carry out wire drawing, is 0.8 to 1.6 millimeter the stainless solid-state welding wire that is used for to obtain to have diameter.

Table 6

Symbol	The chemical constituent (percentage by weight) that is used for stainless solid welding wire
										Carbon	Silicon	Manganese	Phosphorus	Sulphur	Nickel	Chromium	Molybdenum	Niobium
	?B3 ?B4 ?B5	?0.04 ?0.02 ?0.04	?0.4 ?0.3 ?0.4	?2.0 ?3.3 ?1.9	?0.015 ?0.025 ?0.019	?0.010 ?0.011 ?0.015	?9.5 ?12.4 ?10.0	?20.0 ?19.5 ?20.1	????- ???3.0 ????-	Carbon	Silicon	Manganese	Phosphorus	Sulphur	Nickel	Chromium	Molybdenum	Niobium	????- ????- ????0.7

Next, a plurality of welding wires are the flux core welding wires that are used for carbon steel from those, are used for the solid welding wire of carbon steel, are used for stainless flux core welding wire, and are used for that stainless solid welding wire chooses.As lower fatty acid or their salt, they are to choose from the valeric acid shown in the table 7, octylic acid, caprylic acid, laurate, linderic acid and their slaine, and reason is their low prices and very easily in industrial application.A kind of lubricating oil and lubricated granules and a kind of aliphatic acid of selecting or its salt face mix, and mixing and dispersion are coated welding wire surface.In addition, aphthenic acids since its low price to be easy to industrial application selected as cycloaliphatic acids, and the slaine of aphthenic acids wherein slaine be to be selected from potassium, manganese, iron, cobalt, copper, tin, caesium and lead.In addition, from diethyl phthalate, dibutyl phthalate, at least one composition of choosing in the sad and furan compound of phthalic acid two is as the hydrocarbon compound rather than the aphthenic acids that contain ring structure.Aphthenic acids, the hydrocarbon compound with loop configuration of its slaine or other type and lubricating oil and lubricated granules mix to be used as feed promoter.The dispersion of the mixing that produces is coated welding wire surface.When in cycloaliphatic acids, adding a spot of linear fatty acid or its salt, do not hinder cycloaliphatic acids or their salt effect as adhesive or paste.

Lubricating oil as the feed improver is optional from animal oil, vegetable oil, mineral oil, artificial oil or its mixture.The lubricated granules that uses is from by molybdenum bisuphide, tungsten disulfide, and graphitic carbon is chosen in the group that polytetrafluoroethylene (PTFE) and its mixture are formed.For relatively, used high acid salt such as potassium stearate and odium stearate, reach potassium acetate and coat welding wire surface.

Table 7-1

Aliphatic acid	The number of carbon atom	Free acid	Cobalt	Plumbous	Manganese	Potassium	Sodium
Aliphatic acid	The number of carbon atom	Free acid	Cobalt	Plumbous	Manganese	Potassium	Sodium	The eleventh of the twelve Earthly Branches acid caproic acid sad laurate 5-12 of sad Secanoic acid (carbon) olefin(e) acid	?5 ?6 ?8 ?7-10 ?10 ?12 ?12	?0 ?0 ?0 ?0 ?0 ?0 ?0	0 - - - 0 - -	0 0 0 - - 0 -	- - 0 0 0 - 0	- - 0 0 ?- ?0 ?0	- - - - - - 0
Stearic acid acetate	18 ?2	?- ?-	- -	- -	- -	?0 ?0	0 -		?5 ?6 ?8 ?7-10 ?10 ?12 ?12	?0 ?0 ?0 ?0 ?0 ?0 ?0	0 - - - 0 - -	0 0 0 - - 0 -	- - 0 0 0 - 0	- - 0 0 ?- ?0 ?0	- - - - - - 0

Table 7-2

Aliphatic acid	Zinc	Calcium	Tin	Zirconium	Iron	Magnesium	Lithium	Copper
Aliphatic acid	Zinc	Calcium	Tin	Zirconium	Iron	Magnesium	Lithium	Copper	The eleventh of the twelve Earthly Branches acid caproic acid sad laurate 5-12 of sad Secanoic acid (carbon) olefin(e) acid	- - - - - 0 -	- - - - - - 0	- - - - 0 - -	- - 0 - - - -	- 0 - - - - -	0 - - - - - -	- - 0 - - - -	- - - 0 - - -
Stearic acid acetate	- -	- -	- -	- -	- -	- -	- -	- -		- - - - - 0 -	- - - - - - 0	- - - - 0 - -	- - 0 - - - -	- 0 - - - - -	0 - - - - - -	- - 0 - - - -	- - - 0 - - -

Table 7-3

Aliphatic acid	Nickel	Cerium	Caesium	Titanium	Aluminium
Aliphatic acid	Nickel	Cerium	Caesium	Titanium	Aluminium	The eleventh of the twelve Earthly Branches acid caproic acid sad laurate 5-12 of sad Secanoic acid (carbon) olefin(e) acid	- - 0 - - - -	- - 0 - - - -	- - 0 - - - -	- - - - - 0 -	- - - - - - -
Stearic acid acetate	- -	- -	- -	- -	- -		- - 0 - - - -	- - 0 - - - -	- - 0 - - - -	- - - - - 0 -	- - - - - - -

Should be noted that lower fatty acid or its salt, or the existence of cycloaliphatic acids or its salt or do not exist as follows proves.Clean welding wire with the volatilization organic solvent, and with the liquid cleaning solvent that produces through as the analysis of nuclear magnetic resonance spectroscopy and mass spectral analysis with lower fatty acid or its salt, or cycloaliphatic acids or its salt are emanated from lubricating oil and lubricated granules.The salt that it should be noted that aphthenic acids and it is launched a kind of distinctive fragrance, and can determine whether to exist the acid of being fixed in welding wire or the salt of trace by the fragrance amount.Therefore, can from other aliphatic acid, tell the existence of aphthenic acids and its salt in the production site.Because this acid and salt can prevent mistake and use, and therefore preferably use it.

In an embodiment, chain hydrocarbon compound comprises sad, laurate, and the slaine of 5-12 (carbon) olefin(e) acid and 5-12 (carbon) olefin(e) acid is to mix with lubriation material (that is: lubricating oil and lubricated granules).The dispersion or the solution of every kind of mixing are applied to welding wire surface.With respect to other chain compound, every kind of chain compound imposes on welding wire surface, and subsequently, selectively lubriation material is imposed on welding wire surface.Aphthenic acids or its slaine are after mixing with lubricating oil and lubricated granules, or single using only and after the lubricating oil mixing.

Next, use automatic welder(welding machine) to every kind of welding wire through 30 minutes continuous welding after, detect of the influence of the deposit of welding wire surface to the welding wire feed performance.By detecting feed resistance, the stability of feed resistance, and the feed performance of estimating welding wire owing to the chocking-up degree in cushions that causes deposit and separating of metal welding wire surface.

With reference to figure 4, it is the flow chart that shows the automatic welding machine that uses in these embodiments.As shown in Figure 4, a spool 10 twines welding wire on it, make its maintenance horizontal positioned.8 pairs of a pair of donor rollers are adjacent to spool 10 welding wires and carry out feed.Drive this to donor rollers 8 by welding wire feed motor 7.Along the horizontal-extending of welding wire is traditional thread binding a conduit cable 9 arranged.It is from feed 8 feed.(turns) 12 that turn round is housed on two on the road of conduit hawser 9, a welding gun is housed at the tip of hawser 9.

When using this welding robot, welding wire passes through donor rollers 8 and horizontal feed by spiral circle 10, and arrives welding guns 11, welding there through conduit hawser 9 and two (turns) 12 that turn round.

Finish welding and can record respectively and supply with resistance and in the cushions chocking-up degree of conduit hawser by connecing following mode: the conduit hawser is set at 6 meters long, and the diameter of two (turns) 12 that turn round is defined as 400 millimeters.Feed resistance feed roller 8 power opposite with feed direction that be subjected to when welding are assessed.In the process of continuous welding, assessed the stability of feed resistance with respect to the time.After continuous welding 30 minutes, increase and the degree of congestion of comment lubriation material with the weight in the Spring liner.

The condition of work of welding wire and the sediment of welding wire surface are as shown in following table 9.The assessment of welding wire feed performance is displayed in Table 9.The feed resistance that is displayed in Table 9 is the mean value of drag measurement, and wherein ◎ represents 5kgf or is lower than the mean value of 5kgf, and zero expression surpasses 5kgf but is not more than the mean value of 8kgf, and △ represents to surpass the mean value of 8kgf, and X represent can not feed welding wire.The variation of feed resistance stability expression feed resistance, and ◎ represents 1kgf or lower variation, zero expression surpass 1kgf but are not more than the variation of 2kgf, and △ represents to surpass 2kgf but the variation that is not more than 5kgf, and X represents to surpass the variation of 5kgf.The evaluation criterion of chocking-up degree is that ◎ represents 0.002 gram or lower obstruction amount, and zero expression exceeds 0.002 gram but is not more than the obstruction amount of 0.005 gram, and △ represents to exceed 0.005 gram but the obstruction amount and the X that are not more than 0.01 gram represents that this amount is no less than 0.01 gram.

Table 8-1

	No.	Welding wire solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules	The aliphatic acid of deposition or the amount (gram) of its salt	Sedimental total amount (gram)
	No.	Welding wire solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules		Sedimental total amount (gram)	Embodiment	1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9 ?10 ?11	?M2/F1,15％ ?M2/F2,14％ B1 B4 B1 ?B2 ?B1 ?M3/F4,22％ B5 ?M3/F3,16％ B3	The plumbous lead octylate of valeric acid valeric acid cobalt caproic acid valeric acid manganese octylate secainoic acid potassium octylate octylic acid pottassium octylate cobalt caprylate manganese caprylate caprylic acid zinc laurate manganese caprylate tin caprylate potassium octylate	Vegetable oil mineral oil+artificial oil artificial oil mineral oil animal oil artificial oil vegetable oil vegetable oil artificial oil artificial oil vegetable oil artificial oil mineral oil artificial oil	Tungsten disulfide+carbon does not have the molybdenum bisuphide tungsten disulfide and does not have molybdenum bisuphide+carbon polytetrafluoroethylene (PTFE) molybdenum bisuphide and do not have polytetrafluoroethylene (PTFE) tungsten disulfide molybdenum bisuphide	0.2 ?0.09 ?0.002 ?0.005 ?0.3 ?0.2 ?0.6 ?1.5 ?1.9 ?0.6 ?0.1	1.2 0.5 ?2.1 ?0.2 ?0.9 1.3 ?0.6 ?3.9 ?4.9 ?3.1 ?2.5

Table 8-2

	?No.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules	The aliphatic acid of deposition or the amount of its salt (gram	Sedimental total amount (gram)
	?No.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules		Sedimental total amount (gram)	Embodiment	?12 ?13 ?14 ?15 ?16 ?17 ?18 ?19 ?20 ?21 ?22 ?23 ?24	?M4/F4,19％ M2/F1,14％ B4 B1 M2/F1,14％ B2 B1 B4 M1/F1,13％ B2 M2/F2,14％ B1 B1	Laurate lead laurate potassium laurate manganese octoate 5-12 (carbon) olefin(e) acid linderic acid manganese linderic acid potassium zinc laurate linderic acid calcium tin caprylate zirconium octylate iron caproate defends sour manganese lithium octylate	Artificial oil vegetable oil vegetable oil mineral oil mineral oil vegetable oil artificial oil vegetable oil artificial oil mineral oil vegetable oil vegetable oil animal oil artificial oil artificial oil vegetable oil	Polytetrafluoroethylene (PTFE) does not have molybdenum bisuphide polytetrafluoroethylene (PTFE) molybdenum bisuphide molybdenum bisuphide molybdenum bisuphide molybdenum bisuphide and does not have molybdenum bisuphide polytetrafluoroethylene (PTFE) molybdenum bisuphide tungsten disulfide molybdenum bisuphide molybdenum bisuphide	0.07 ?0.008 ?0.4 ?0.4 ?1.1 ?0.04 ?0.003 ?0.09 ?0.08 ?1.9 ?0.5 ?1.2 ?1.8	?0.9 ?0.3 ?1.6 ?2.0 ?3.2 ?1.2 ?0.8 ?0.2 ?1.5 ?2.3 ?1.6 ?3.5 ?4.1

Table 8-3

	?No．	Welding wire/solder flux weight (percentage by weight)	Acid of fat boat or its salt	Feed oil	Lubricated granules	The aliphatic acid of deposition or the amount (gram) of its salt	Sedimental total amount (gram)
	?No．	Welding wire/solder flux weight (percentage by weight)	Acid of fat boat or its salt	Feed oil	Lubricated granules		Sedimental total amount (gram)	Embodiment	?25 ?26 ?27 ?28 ?29 ?30	?B3 ?M3/F4,19％ ?B2 ?B5 ?M4/F3.20％ ?B1	Copper secanoate nickel octylate linderic acid aluminium laurate titanium cesium octylate cesium octylate	Mineral oil vegetable oil animal oil vegetable oil vegetable oil artificial oil mineral oil	Tungsten disulfide polytetrafluoroethylene (PTFE) molybdenum bisuphide tungsten disulfide does not have the polytetrafluoroethylene (PTFE) polytetrafluoroethylene (PTFE)	?0.008 ?0.6 ?0.3 ?0.08 ?0.03 ?0.1	?0.8 ?1.2 ?1.8 ?0.4 ?3.1 ?0.9

Table 8-4

	Mo.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules	The aliphatic acid that condition is long-pending or the amount (gram) of its salt	Sedimental total amount (gram)
	Mo.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules		Sedimental total amount (gram)	Embodiment	?31	?M1/F1,13％	Iron naphthenate	Vegetable oil	Do not have	0.002	?0.15
?32	?M1/F2,15％	Cobalt naphthenate+chromium naphthenate	Mineral oil+vegetable oil	Do not have	0.1	?2.2			?31	?M1/F1,13％	Iron naphthenate	Vegetable oil	Do not have	0.002	?0.15
?32	?M1/F2,15％	Cobalt naphthenate+chromium naphthenate	Mineral oil+vegetable oil	Do not have	0.1	?2.2	?33		?B2	Aphthenic acids+cyclic potassium naphthenate	Do not have	Do not have	1.2	?1.2
?34	?B4	The aphthenic acids caesium	Mineral oil	Molybdenum bisuphide	1.8	?4.8	?33		?B2	Aphthenic acids+cyclic potassium naphthenate	Do not have	Do not have	1.2	?1.2
?34	?B4	The aphthenic acids caesium	Mineral oil	Molybdenum bisuphide	1.8	?4.8	?35		?B1	Magnesium naphthenate+zirconium naphthenate	Mineral oil+artificial oil	Do not have	0.9	?3.5
?36	?B1	Cyclic potassium naphthenate+aphthenic acids	Do not have	Molybdenum bisuphide	0.5	?1.8	?35		?B1	Magnesium naphthenate+zirconium naphthenate	Mineral oil+artificial oil	Do not have	0.9	?3.5
?36	?B1	Cyclic potassium naphthenate+aphthenic acids	Do not have	Molybdenum bisuphide	0.5	?1.8	?37		?B2	Lead naphthenate+zinc naphthenate	Artificial oil+vegetable oil	Tungsten disulfide	1.9	?4.9
?38	?M4/F4,22％	Aphthenic acids caesium+magnesium naphthenate	Mineral oil+artificial oil	The molybdenum bisuphide tungsten disulfide	0.1	?0.3	?37		?B2	Lead naphthenate+zinc naphthenate	Artificial oil+vegetable oil	Tungsten disulfide	1.9	?4.9
?38	?M4/F4,22％	Aphthenic acids caesium+magnesium naphthenate	Mineral oil+artificial oil	The molybdenum bisuphide tungsten disulfide	0.1	?0.3	?39		?B5	Aphthenic acids tin+	Artificial oil	Do not have	1.1	?3.5
		Sodium naphthenate+aluminium napthenate					?39		?B5	Aphthenic acids tin+	Artificial oil	Do not have	1.1	?3.5
		Sodium naphthenate+aluminium napthenate					?40		?M3/F4,16％	Aphthenic acids	Animal and plant oil+	Molybdenum bisuphide+carbon	0.01	?1.0
		Mineral oil					?40		?M3/F4,16％	Aphthenic acids	Animal and plant oil+	Molybdenum bisuphide+carbon	0.01	?1.0
		Mineral oil								The cyclic potassium naphthenate potassium octanoate
41	?B3	Aphthenic acids tin+calcium naphthenate	Mineral oil+artificial oil	Tungsten disulfide molybdenum bisuphide	0.009	?0.5				The cyclic potassium naphthenate potassium octanoate

Table 8-5

	No.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules	The aliphatic acid of deposition or the amount (gram) of its salt	Sedimental total amount (gram)
	No.	Welding wire/solder flux weight (percentage by weight)	Aliphatic acid or its salt	Feed oil	Lubricated granules		Sedimental total amount (gram)	Embodiment	?42 ?43 ?44 ?45 ?46 ?47 ?48 ?49 ?50 ?51	M4/F3,20％ M1/F2,18％ B4 ?B2 ?M2/F1,13％ ?B1 ?B1 ?B2 ?B3 ?B4	Aphthenic acids lead naphthenate+nickel naphthenate cyclic potassium naphthenate+aphthenic acids lithium copper naphthenate manganese naphthenate cyclic potassium naphthenate+aphthenic acids titanium+aphthenic acids caesium diethyl phthalate dibutyl phthalate dioctyl phthalate furan compound	No vegetable oil animal and plant oil+mineral oil mineral oil vegetable oil animal and plant oil vegetable oil vegetable oil artificial oil does not have	Do not have no molybdenum bisuphide polytetrafluoroethylene (PTFE) and do not have tungsten disulfide+carbon molybdenum bisuphide nothing	?0.8 ?1.3 ?0.2 ?0.0015 ?0.09 ?1.1 ?0.2 ?0.09 ?0.4 ?1.2	?0.8 ?2.9 ?1.2 ?0.8 ?1.2 ?2.9 ?1.3 ?2.0 ?1.5 ?1.2

Table 8-6 Table 8-7

Table 9-1

	?No.	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	????1 ????2 ????3 ????4 ????5 ????6 ????7 ????8 ????9 ????10 ????11	○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○	◎ ○ ◎ ◎ ○ ◎ ○ ◎ ○ ◎ ◎	○ ◎ ○ ○ ◎ ○ ◎ ○ ○ ○ ○

Table 9-2

	?No.	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	????12 ????13 ????14 ????15 ????16 ????17 ????18 ????19 ????20 ????21 ????22 ????23 ????24 ????25 ????26 ????27 ????28 ????29 ????30	◎ ○ ◎ ◎ ◎ ◎ ○ ○ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ○ ○ ◎	◎ ◎ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ◎ ◎ ◎ ○ ◎ ◎ ○ ◎ ◎	○ ◎ ○ ○ ○ ○ ○ ◎ ◎ ○ ○ ○ ○ ○ ◎ ○ ◎ ○ ◎

Table 9-3

	?No.	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	????31 ????32 ????33 ????34 ????35 ????36 ????37 ????38 ????39 ????40 ????41	○ ○ ○ ○ ○ ○ ○ ○ ○ ◎ ○	○ ○ ○ ◎ ○ ◎ ◎ ◎ ○ ◎ ◎	◎ ◎ ◎ ○ ◎ ○ ○ ○ ◎ ○ ○

Table 9-4

	?No.	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	????42 ????43 ????44 ????45 ????46 ????47 ????48 ????49 ????50 ????51	○ ○ ○ ○ ○ ○ ○ ○ ○ ○	○ ○ ◎ ○ ◎ ◎ ○ ○ ○ ◎	◎ ◎ ○ ◎ ○ ○ ◎ ◎ ◎ ◎

Table 9-5

	?No.	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	?52 ?53 ?54 ?55 ?56 ?57 ?58 ?59	○ Δ ○ Δ ○ Δ ○ Δ	× Δ Δ Δ × Δ Δ Δ	× × × × × × × ×

Table 9-6

	?No.??	The feed resistance	Feed resistance stability	The degree of stopping up
	?No.??	The feed resistance	Feed resistance stability	The degree of stopping up	The comparative example	?60 ?61 ?62 ?63 ?64 ?65 ?66 ?67	○ Δ × ○ Δ ○ ○ ○	× Δ × Δ × Δ ○ Δ	× × ○ × × × × ×

As show 9-1 to showing shown in the 9-6, in an embodiment of the present invention, wherein lower fatty acid or its salt, or cycloaliphatic acids or its mineralization are in welding wire surface, and the mixture of lubricating oil or lubricating oil and lubricated granules carries out chemical bond at welding wire surface, the feed of welding wire improved and stablized and in elastic material in the degree of congestion of lubriation material can be inhibited to a great extent.Particularly No. the 1st to 51, embodiment, lower fatty acid or its salt, or cycloaliphatic acids or its salt is present in welding wire surface, and is 0.1 to 5 gram by the sedimental gross weight that lubricating oil and lubricated granules are made at per 10 kilograms of welding wires, to determine the very stable feed performance of shield welding wire.

On the contrary, in comparative example 52 and 56, potassium stearate does not allow to carry out between welding wire surface and the lubricating oil chemical bond, produces the feed stability of the welding wire of difference.In addition, lubriation material is deposited in the cushions, thereby has increased the obstruction deposition.In comparative example 53,54,55,57 and 59, lubricated granules is again because the gentle property of lubricating oil is fixed in welding wire surface, so lubriation material is deposited on cushions, thereby has increased the obstruction sediment yield.In comparative example 58, odium stearate can not be carried out chemical bond with welding wire surface and lubricating oil, and lubricated granules is just owing to the wettability of lubricating oil is fixed in welding wire surface.Therefore, lubriation material deposits in cushions, thereby produces liner choke-off.The comparative example is as using Sodium stearate, and it can not carry out chemical bond with welding wire surface and lubricating oil, produces very poor welding wire and supplies with stability.Therefore, lubriation material is deposited on cushions, thereby causes liner choke-off.In comparative example 62,63 and 65, potassium stearate does not allow welding wire surface and lubricating oil chemical bond, and lubricated granules is just owing to the wettability of lubricating oil is fixed in welding wire surface in its lower section.Therefore, greasing substance is deposited on cushions, thereby causes the obstruction of lining.In comparative example 66, the calcium stearate of use does not allow to carry out between welding wire surface and the lubricating oil combination, and the public wettability of lubricating oil that relies on of lubricated granules is fixed in welding wire surface in its lower section.Therefore, lubriation material is deposited in the cushions, thereby causes liner choke-off.

In addition, in comparative example 64, lubricating oil is coated welding wire surface separately, so welding wire can not stable supplying, the feed resistance of welding wire can not be satisfactory and the chocking-up degree that is subjected to cushions be not suppressed to gratifying degree.In comparative example 67, use odium stearate and it welding wire surface and lubricating oil chemical bond can not be in the same place.Lubricated granules just relies on the wettability of lubricating oil and is fixed in the bonding wire surface.The feed stability of bonding wire can not be satisfactory, and lubriation material is deposited in the cushions, thereby caused the obstruction of lining.

Propose in detail as the front, when having 5 when the chain compound of 12 carbon atoms or hydrocarbon compound with loop configuration are present in welding wire surperficial, their allow chemical bond between the lubriation material made by lubricating oil and/or lubricated granules and the welding wire surface.Therefore, lubriation material not too can separate from welding wire surface, has caused the raising of the feed performance of welding wire.When welding wire is used for welding for a long time, the trouble that does not cause almost by the obstruction of lubriation material, thus guarantee the stable material-supplying of welding wire.In the existence of the lubriation material of welding wire surface welding wire is had good feed stability effect is arranged.

Claims

1, is used for carbon steel or stainless welding wire by what solid welding wire coating or intectate and flux core welding wire were formed, it is characterized in that, at least a hydrocarbon compound is to be selected from the category of being set up jointly by saturated or unsaturated hydrocarbon compound with 5 to 12 carbon atoms and linear or type structure and the hydrocarbonylation with loop configuration, and this hydrocarbon compound is present in welding wire surface.

According to the described welding wire of claim 1, it is characterized in that 2, wherein said at least a component is made up of the saturated or unsaturated hydrocarbon compound with linearity or bifurcation structure, and said hydrocarbon compound is made up of carboxylic acid or its slaine.

3, according to the described welding wire of claim 2, it is characterized in that wherein said carboxylic acid is a kind of component of choosing from the group of being made of valeric acid, caproic acid, Caprylic acid, octylic acid, Secanoic acid, Capric acid, decanoic acid, laurate, 5-12 (carbon) olefin(e) acid and synthetic fatty acid.

4, according to the described welding wire of claim 3, it is characterized in that wherein said slaine is a component of selecting in the said metal carboxylate of accessory rights requirement 3 qualifications and some metals of choosing from lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium.

According to the described welding wire of claim 1, it is characterized in that 5, wherein said hydrocarbon compound with loop configuration has circulus, form by carboxylic acid or its slaine.

According to the described welding wire of claim 5, it is characterized in that 6, wherein said hydrocarbon compound is made up of the aphthenic acids with five-membered ring or six-membered ring structure.

7, according to the described welding wire of claim 5, it is characterized in that, wherein said hydrocarbon compound is made up of at least a becket alkyl salt, and the metal that naphthenate contains is to be selected from lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium.

8, according to the described welding wire of claim 5, it is characterized in that, wherein said hydrocarbon compound is made up of the becket alkyl salt of at least a aphthenic acids, and metal is to be selected from the category that lithium, sodium, magnesium, aluminium, potassium, calcium, titanium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, tin, caesium, lead and cerium are formed.

9, according to each described welding wire in the claim 1 to 8, it is characterized in that it further comprises at least a lubricating oil, this lubricating oil is selected from animal and plant oil, mineral oil, and artificial oil, said at least a lubricating oil is to be present in welding wire surface.

10, according to the described welding wire of claim 9, it is characterized in that, wherein said at least a hydrocarbon compound and said at least a lubricating oil be with per 10 kilograms of welding wires be 0.1 to 5 the gram total amount be deposited on welding wire surface.

11, according to each described welding wire in the claim 1 to 10, it is characterized in that, it further comprises the lubricated granules that is present in welding wire surface, and said lubricated granules is by from molybdenum bisuphide, tungsten disulfide, and a kind of component of choosing in the group that graphitic carbon and polytetrafluoroethylene (PTFE) are formed is made.

12, according to the described welding wire of claim 11, it is characterized in that, wherein said at least a hydrocarbon compound, and said lubricated granules be with per 10 kilograms of welding wires be 0.1 to 5 the gram total amount be deposited on welding wire surface.